#include <stdio.h>
#define MAXLINE 1000

int getline(char line[], int maxline);
void copy(char to[], char from[]);

int main()
{
    int len;
    int max;
    char line[MAXLINE];
    char longest[MAXLINE];

    max = 0;
    while((len = getline(line, MAXLINE))>0)
        if(len>max){
            max = len;
            copy(longest, line);
        }
    if(max>0)
        printf("%s",longest);
    return 0;
}

int getline(char s[], int lim)
{
    int c, i;

    for(i=0;i<lim-1&&(c=getchar())!=EOF&&c!='\n';++i)
        s[i]=c;
    if(c == '\n'){
        s[i] = c;
        ++i;
    }
    s[i] = '\0';
    return i;
}

void copy(char to[], char from[])
{
    int i;

    i = 0;
    while((to[i] = from[i])!='\0')
        ++i;
}
